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The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called ____________

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The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called ____________

(a) piggybacking

(b) cyclic redundancy check

(c) fletcher’s checksum

(d) parity check

This question was posed to me during an interview for a job.

Enquiry is from Data Link Layer topic in chapter OSI Model of Computer Network

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The correct choice is (a) piggybacking

The explanation: Piggybacking is a technique in which the acknowledgment is temporarily delayed so as to be hooked with the next outgoing data frame. It saves a lot of channel bandwidth as in non-piggybacking system, some bandwidth is reserved for acknowledgement.

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